Humpreys, A.R.
Herman Melville
Grove Press, 1962
 Buku Teks SO
Schilp, C.A.
Herman Heijermans
Moussault, 1967
 Buku Teks
Bergeijk, Herman Van
Herman Hertzberger/Herman Van Bergeijk
Birkhauser Verlag, 1997
 Buku Teks SO
Seekings, David
Encyclopaedia of management : conferences and meetings
Crest publishing, 1999
 Buku Referensi
Dunn, Frederick Sherwood
The practice and procedure of international conferences
Johns Hopkins Press, 1929
 Buku Teks